Puzzle Creator and Workshop
General discussion and help forum for the Portal 2 "Perpetual Testing Initiative" Puzzle Creator and Workshop publishing platform. Post here if you have questions about the puzzle creator or the Workshop, or just to pimp your PTI map!

Hammer and Modding
General discussion and help forum for all things Portal 2 Hammer mapping, modeling and modding. Post screen shots of your upcoming Portal 2 maps or ask for help about mapping for Portal 2, but be sure to read the useful stickies!